Snapper 

Snapper reads the directory of a disk which is then saved as a "snapshot", so that later you can compare it with a new snapshot of the disk and see what has changed. The results are easy to see with colour highlighting in an Explorer-style interface.
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4TOPS Compare Excel Files 

This easy to use program that clearly reports where and what the differences are. Features: - Differences in HTML Analysis report and Visualization reports are hyperlinked - Can be used as part of an automated process using API (ActiveX)
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